Feature Request

Summary

Add configuration options for font size in the web chat interface to improve accessibility and user experience.

Background

Currently, the Clawdbot/OpenClaw web interface uses fixed font sizes that cannot be adjusted by users. While browser zoom works as a workaround, native font size controls would provide a better user experience, especially for accessibility needs.

Proposed Solution

Add UI configuration options to the gateway config schema, such as:

{
  "ui": {
    "fontSize": {
      "base": "16px",
      "messages": "14px", 
      "input": "16px"
    },
    "fontScale": 1.2
  }
}

Use Cases

• Users with visual impairments needing larger text
• High-DPI displays where default fonts appear too small
• Personal preference for different font sizes
• Consistent sizing across different devices/browsers

Current Workarounds

• Browser zoom (affects entire page, not ideal)
• CSS extensions/user styles (requires technical knowledge)

Implementation Notes

• Could leverage CSS custom properties for easy theming
• Should maintain responsive design with different font sizes
• Consider minimum/maximum bounds for usability

This would improve the accessibility and customization of the OpenClaw web interface significantly.